Allow the Mac and iOS Breakpad clients to build without exceptions when the C++ standard library is not provided by libstdc++. libc++, for example, does

not provide its own try and catch replacement macros when exceptions are
disabled.

BUG=509
Review URL: https://breakpad.appspot.com/503002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1089 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/client/ios/Breakpad.mm

@@ -38,20 +38,32 @@
 #define DEBUGLOG if (gDebugLog) fprintf
 #define IGNORE_DEBUGGER "BREAKPAD_IGNORE_DEBUGGER"
 
-#import "common/mac/SimpleStringDictionary.h"
+#import "client/ios/Breakpad.h"
+
+#import <Foundation/Foundation.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
 
 #import "client/mac/crash_generation/ConfigFile.h"
-#import "client/mac/sender/uploader.h"
 #import "client/mac/handler/exception_handler.h"
 #import "client/mac/handler/minidump_generator.h"
-#import "client/ios/Breakpad.h"
+#import "client/mac/sender/uploader.h"
+#import "common/mac/SimpleStringDictionary.h"
 #import "client/ios/handler/ios_exception_minidump_generator.h"
 #import "client/mac/handler/protected_memory_allocator.h"
 
-#import <sys/stat.h>
-#import <sys/sysctl.h>
-
-#import <Foundation/Foundation.h>
+#ifndef __EXCEPTIONS
+// This file uses C++ try/catch (but shouldn't). Duplicate the macros from
+// <c++/4.2.1/exception_defines.h> allowing this file to work properly with
+// exceptions disabled even when other C++ libraries are used. #undef the try
+// and catch macros first in case libstdc++ is in use and has already provided
+// its own definitions.
+#undef try
+#define try       if (true)
+#undef catch
+#define catch(X)  if (false)
+#endif  // __EXCEPTIONS
 
 using google_breakpad::ConfigFile;
 using google_breakpad::EnsureDirectoryPathExists;

src/client/mac/Framework/Breakpad.mm

@@ -42,8 +42,9 @@
 #import "client/mac/Framework/Breakpad.h"
 
 #import <Foundation/Foundation.h>
-#import <sys/stat.h>
-#import <sys/sysctl.h>
+#include <pthread.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
 
 #import "client/mac/crash_generation/Inspector.h"
 #import "client/mac/handler/exception_handler.h"
@@ -53,6 +54,18 @@
 #import "common/mac/MachIPC.h"
 #import "common/mac/SimpleStringDictionary.h"
 
+#ifndef __EXCEPTIONS
+// This file uses C++ try/catch (but shouldn't). Duplicate the macros from
+// <c++/4.2.1/exception_defines.h> allowing this file to work properly with
+// exceptions disabled even when other C++ libraries are used. #undef the try
+// and catch macros first in case libstdc++ is in use and has already provided
+// its own definitions.
+#undef try
+#define try       if (true)
+#undef catch
+#define catch(X)  if (false)
+#endif  // __EXCEPTIONS
+
 using google_breakpad::KeyValueEntry;
 using google_breakpad::MachPortSender;
 using google_breakpad::MachReceiveMessage;

src/client/mac/handler/exception_handler.cc

@@ -27,19 +27,32 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#include <map>
 #include <mach/exc.h>
 #include <mach/mig.h>
 #include <pthread.h>
 #include <signal.h>
 #include <TargetConditionals.h>
 
+#include <map>
+
 #include "client/mac/handler/exception_handler.h"
 #include "client/mac/handler/minidump_generator.h"
 #include "common/mac/macho_utilities.h"
 #include "common/mac/scoped_task_suspend-inl.h"
 #include "google_breakpad/common/minidump_exception_mac.h"
 
+#ifndef __EXCEPTIONS
+// This file uses C++ try/catch (but shouldn't). Duplicate the macros from
+// <c++/4.2.1/exception_defines.h> allowing this file to work properly with
+// exceptions disabled even when other C++ libraries are used. #undef the try
+// and catch macros first in case libstdc++ is in use and has already provided
+// its own definitions.
+#undef try
+#define try       if (true)
+#undef catch
+#define catch(X)  if (false)
+#endif  // __EXCEPTIONS
+
 #ifndef USE_PROTECTED_ALLOCATIONS
 #if TARGET_OS_IPHONE
 #define USE_PROTECTED_ALLOCATIONS 1